Adsorption behavior of cadmium on modified mesoporous aluminosilicates

Subject Areas : Journal of the Iranian Chemical Research

Hamid  Sepehrian ¹ (Nuclear Science and Technology Research Institute, AEOI , P.O. Box 11365/8486, Tehran, Iran)
Ramin  Cheraghali ² (Chemistry Department, Islamic Azad University, Saveh Branch, Saveh, Iran)
Hojjat alla  Abdi ³ (Chemistry Department, Islamic Azad University, Saveh Branch, Saveh, Iran)
Peyman  Rezaei ⁴ (Chemistry Department, Islamic Azad University, Saveh Branch, Saveh, Iran)

Received: 2011-02-11 Accepted : 2011-09-10 Published : 2011-03-20

Keywords: Cadmium, Mesoporous, Aluminosilicate, Adsorption behavior,

Abstract :

In this study, mesoporous MCM-41 has been modified by incorporation of aluminum ion asa rapid, simple and inexpensive method for modification. The adsorbent is characterized usingpowder X-ray diffraction and nitrogen adsorption-desorption isotherm data. The distributioncoefficient of cadmium ion on the mesoporous aluminosilicates has been enhanced with theincrease of the aluminum in the framework of the adsorbent. Adsorption behavior of cadmiumon the Al10MCM-41 and Al20MCM-41 adsorbents has been studied and experimentaladsorption isotherm is successfully described by Langmuir model. The maximum adsorptioncadmium capacity was 11.5 mg g-1. The effects of pH and adsorption kinetics have also beenstudied by batch method and the result shows pH of solution hasn't any effect on cadmiumadsorption.

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